Comics

Aquaman leads his people from the shattered city, and goes to Tritonis, only to discover that Tritonis has been completely destroyed. He and Tempest lead the armies of Atlantis...

Aquaman and Ocean Master fight, while the JLA tries to stop the Atlantean armies (who are actually being manipulated by Ocean Master) from destroying Cerdia.

Aquaman talks a mob out of violence, then helps Tempest to free his son from Ocean Master.

While the JLA helps rebuild Atlantis, Aquaman hunts down and captures Ocean Master, then tells the UN that he's annexing Cerdia.